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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
commit | 45d6379135504814ab723b57f0eb8be23393a51d (patch) | |
tree | d4f2ec4acca824a8446387a758b0ce4238a4dffa /contrib/scripts/nanny.pl | |
parent | Initial commit. (diff) | |
download | bind9-upstream.tar.xz bind9-upstream.zip |
Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | contrib/scripts/nanny.pl | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/contrib/scripts/nanny.pl b/contrib/scripts/nanny.pl new file mode 100644 index 0000000..27a159e --- /dev/null +++ b/contrib/scripts/nanny.pl @@ -0,0 +1,49 @@ +#!/usr/bin/perl + +# Copyright (C) Internet Systems Consortium, Inc. ("ISC") +# +# SPDX-License-Identifier: MPL-2.0 +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, you can obtain one at https://mozilla.org/MPL/2.0/. +# +# See the COPYRIGHT file distributed with this work for additional +# information regarding copyright ownership. + +# A simple nanny to make sure named stays running. + +$pid_file_location = '/var/run/named.pid'; +$nameserver_location = 'localhost'; +$dig_program = 'dig'; +$named_program = 'named'; + +fork() && exit(); + +for (;;) { + $pid = 0; + open(FILE, $pid_file_location) || goto restart; + $pid = <FILE>; + close(FILE); + chomp($pid); + + $res = kill 0, $pid; + + goto restart if ($res == 0); + + $dig_command = + "$dig_program +short . \@$nameserver_location > /dev/null"; + $return = system($dig_command); + goto restart if ($return == 9); + + sleep 30; + next; + + restart: + if ($pid != 0) { + kill 15, $pid; + sleep 30; + } + system ($named_program); + sleep 120; +} |